Users Guide

Congure a Port for a Bridge-to-FCF Link
If a port is directly connected to an FCF, congure the port mode as FCF. Initially, all FCoE trac is blocked; only FIP frames are
allowed to pass.
NOTE: FCoE-Trusted Port mode used to connect to another FIP snooping bridge (bridge-bridge link) is not supported on
the S5000 switch.
FCoE trac is allowed on the port only after a successful fabric login (FLOGI) request/response and conrmed use of the
congured FC-MAP value for the VLAN.
Impact on Other Software Features
When you enable FIP snooping on a switch, other software features are impacted.
The following table lists the impact of FIP snooping.
Table 26. Impact of Enabling FIP Snooping
Impact Description
MAC address learning MAC address learning is not performed on FIP and FCoE frames,
which are denied by ACLs dynamically created by FIP snooping
on server-facing ports in ENode mode.
MTU auto-conguration MTU size is set to mini-jumbo (2500 bytes) when a port is in
Switchport mode, the FIP snooping feature is enabled on the
switch, and FIP snooping is enabled on all or individual VLANs.
Link aggregation group (LAG) FIP snooping is supported on port channels on ports on which
PFC mode is on (PFC is operationally up).
STP If you enable an STP protocol (STP, RSTP, PVSTP, or MSTP) on
the switch and ports enter a blocking state, when the state
change occurs, the corresponding port-based ACLs are deleted.
If a port is enabled for FIP snooping in ENode or FCF mode, the
ENode/FCF MAC-based ACLs are deleted.
FIP Snooping on an NPIV Proxy Gateway
When you congure an S5000 as an NPIV proxy gateway and enable Fibre Channel capability, FIP snooping is automatically enabled
on all VLANs using the default FIP snooping settings.
To identify the SAN fabric to which FCoE storage trac is sent, use an FCoE map. FIP snooping is automatically congured on the
FCoE VLAN specied in the FCoE map using the FC-MAP parameter in the map:
• When you apply an FCoE map to a server-facing Ethernet interface in ENode port mode
• When you apply an FCoE map to a fabric-facing FC interface
NOTE: When you congure an S5000 switch as an NPIV proxy gateway, only the fip-snooping max-sessions-
per-enodemac
command is supported to congure FIP snooping.
For more information, refer to NPIV Proxy Gateway.
FIP Snooping in an S5000 Stack
FIP snooping is not supported on stack units in an S5000 stack.
FCoE Transit
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